Her X-Men costars think she's ideal mom material. "She's a fantastic person," Michael Fassbender told Us at last week's premiere. "She's very sweet. Just in the experience of working with her, she sort of gets up and gets on with it, and I think she'll probably do the same in motherhood."

One guy who's definitely not Jones' mystery baby daddy? Her ex Jason Sudeikis. "She told him she wanted kids and it turned him off," a source recently told Us Weekly of the Saturday Night Live star, 35. "Jason was bummed out she was on the mommy track. If Jason were the dad, he'd step it up."